add gracefully shut down server

httpserver.go

@@ -0,0 +1,38 @@
+package utils
+
+import (
+	"context"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"time"
+)
+
+// StartHTTPServer cct
+func StartHTTPServer(address string, handler http.HandlerFunc) {
+	stop := make(chan os.Signal, 1)
+
+	signal.Notify(stop, os.Interrupt)
+
+	srv := &http.Server{Addr: address}
+
+	http.HandleFunc("/", handler)
+
+	go func() {
+		log.Print("listening on http://" + address)
+
+		if err := srv.ListenAndServe(); err != nil {
+			log.Fatal(err)
+		}
+	}()
+
+	<-stop
+
+	log.Print("Shutting down...")
+	ctx, _ := context.WithTimeout(context.Background(), 5*time.Second)
+
+	srv.Shutdown(ctx)
+
+	log.Print("Shut Down")
+}